4025-80-3Relevant academic research and scientific papers
A new route to silicon alkoxides from silica
Kemmitt, Tim,Henderson, William
, p. 1031 - 1035 (2007/10/03)
A novel route to tetraethoxysilane and other silicon alkoxides is described, from amorphous silica (SiO2·H2O) as the raw material. The reaction of amorphous silica with triethanolamine is enhanced by using an alkali metal hydroxide catalyst, to form a range of triethanolamine-substituted silatrane species. These can undergo alkoxide exchange in acidic alcohols to form alkoxysilatranes, tetraalkoxysilanes, hexaalkoxydisiloxanes and higher siloxanes. Reaction of triethanolamine-substituted silatranes with acetic anhydride produces acetoxysilatrane. Products were identified by multinuclear (1H, 13C and 29Si) magnetic resonance spectroscopy, electrospray mass spectrometry or high-resolution gas chromatography electron impact mass spectrometry.
1-Halosilatranes
Voronkov, M. G.,Baryshok, V. P.,Petukhov, L. P.,Rakhlin, V. I.,Mirskov, R. G.,Pestunovich, V. A.
, p. 39 - 56 (2007/10/02)
The electronic structure of 1-halosilatranes is discussed.Some new preparative methods based on hetero- and homo-lytic reactions of the silatrane and the Si- and C-substituted silatranes with halogenating reagents are described and also synthetic routes to 1-halosilatranes from certain organotrialkoxy- and organotrichlorosilanes.The electrophilic reactions of 1-iodosilatrane with ethers and esters, carbonyl compounds, alkoxysilanes and siloxanes, terminal alkynes and organomercurials have been studied
